Process for the production of artificial stone.



r'" rm Fri WIIJJEM JAGQB'UE; ms EAS, ME THE no i i l ii i W il u to l hum-(Lilw w on. .M.

Ell-U1 3, NEXTHFEFBJLANDS.

Manama:

lilo mowing.

To all 203mm it may concern lie it known that ILVJILLEM Jsconus on director, at subject of the Queen of the ends, residing at The Hague, in the Kin dom of the Netherlands, have invented artificial stone suitable for flooring,

p m t, and has for an object the production of mono that homogeneous, dense, and hard throughout. 3

Further objects of my invention are to provide me: is to insure a, uniform. distrinotion. of water throughout the mixture of cement in the old, thereby preventingunc pr V linrclenin and Warping of the ortiin: ii stone durn \ltltl nienns t cement block or the mold,

the cementcomposition for stone seed in. it suitable polished mold. capable to wit-listoncling very high in (ii-(lento prevent the ccnlent liloifiqs mm stickingto the sides of the ll'lOlil, es :ia'lly with large sizes, the polisln-ll wells are first nioistei'ied and then lined with sheets oi mica, aluminum, or other "suitable nmtl'cx -inl 'lind their surfaces moistened before tlic'ncldition of the cei'nent mixture. Upon removal of the compressed cement bloc-lg, lie sheets of mice, aluminum, etc, tend to cling to it, but are rcodi ly removed therefrom, leaving a smooth hard. surface upon the block.

in. czurying out the process, different cc mont compositions wi e used for the upper and lower loyers of the cement block, these compotions, however, are so chosen that the li cning and. binding of the upper and lower la ers take place as uniformly as possible. and are subjected to uniform prec- 1 .Zro-ugliou ll ln I. desired, blocks of stone resembling variegated colored marble may be Insole by ll'llfiliiiglf Suitable cement GOlTlpOSltlQnS to o pesto with Water and. distributing the colors in me Ulhlil. previously lined with sheets of mice, aluminum, etc, to produce the design desired, The surfaces against which the cois applied are first moistened to prevent loss of moisture from the moss. By shaking the mold, the colored pastes are a ilines, procluci Specification of Letters Patent.

' The layer of colored compositions 2,

until the mass burdens.

setting; and. also to pro Milly remove the linisliml ,su bjcctetl for :1

.ng efiects pleasing to the eye,

i otonteol June 2G3 Application filed llccembcir-M, 1912. Seriai No. 738,728. r

and more nearly resembling neuurol stone ioulrl, be sufficiently tlecp to produce or coiorecl effect to a. considerable tlistzince in the booly of the finished stone, so as not to be Worn oil too quickly, During the mixing of the cel cred masses, or non-coloring adhesive, such as isinglass, is coated upon or-eclrlecl thereto to serve as a preliminary binding agent layer oi colored cement composition, e tliin ls yer of Upon the moist dry cement, which has been mixed with av small quantity cit, for example, river sand, is applied until the excess of Water from the colored mass no longer passes through the cement layer. Upon thisluyer of cement and soncl, a further quantity of a suitably inoistenecl mixture of cement and sand, proportion of about one port oil cement to two parts sand, also containing the oclhesive, added, to completely fill the niolli.

from 250 to 400 or i'nore kilograms per square centimeter of surface depending upon the thickness of and. size of the ertiiicial stones to be produced, The 60111- pr sserl mass is from llie'supporting plate, and, removed or displaced thereon for the purpose of fornv ing a treespece between the surface of the supporting plate and the surface of the 2M- tificizll stone. The mass of cement is then moistened from the top and again subjectcil. to the some pressure. The reason. for- The entire mass of cement noiu short time to e pressure cl".v

til)

then somewhat looscnefl the second moistening is as follo\vs:-l)urmg the first 1-essure,"m01sture,collects in:

the lower layer of the compressed product, the upper layers in consequence becoming dry. TlIlS WOUlKl result in a nonuniform solidification of the entir,

to prevent this that mlclitionsl izloisture is applied. to the upper layers, uncl pressure again applied. Upon the wither-au al of the first application pressure, the moisture which collected in the lower layers of the compo add. product tends to distribute itself upwnral, while pllill to the upper siiirface of the mass (lie tributes itself: (lOW'IlWEHTl, proolucing a uniform distribution. of moisture throughoutthe entire n'm Following the stl iition of water, the llll'lC/n. again subjecte l to pres sure as above referred to, the linol pressing liltl'llt-lflll eli'cctii'lg an exceedingly close contact of all the component parts, resulting in sud it is the additional Water epa complete and uniform binding and solidification ofthe entire mass. After the second application of pressure the block is removed from the mold, the adhesive added to the cement serving as a binder until the-mass has hardened. The block is "now placed upon a smooth flat surface, for example, a glass plate, where it remains for about twenty-four hours, to allow it to dry thoroughly, It is then placed in water for a short time, and then allowed to harden for three or four weeks. At the end of this time, the stone may be polished with tin ashes and softmetal such as solder.

, Cement blocks of varying sizes may be made by this process, for example, as large as 60x60 oentuneters, or even 90x90 centimeters in area, and are found to be in every respect suitable for flooring, Wall covering,

and for other uses. They possess great hardness, and do not warp in the hardening process, nor inuse. I claLm: i 1. The process of making artificial stone blocks, which comprises placing in a, mold a plurality of layers of cement composition,

some of which contain moisture and an adhesive, applying high pressure to the mass [of cement composition, releasing the pressure and supplying water to the upper portion of said mass, and reapplying high pressure to said mass.

2. The process of making artificial stone blocks, which comprises placing in a mold a plurality of layers of cement composition some of which contain moisture andan ad hesive, subjecting the mass to a pressure of about 250 kilograms or higher per square centimeter, releasing the pressure and supplying Water to the upper portion of, the mass, and resubjeeting the mass to a pressure of about 250 kilograms or higher per square centimeter.

g 3. The process of making artificial stone blocks, which consists in wetting the surfaces of a mold, adding a layer of moistened cement composition to said mold, adding thereupon a thin layer of a dry cement mixture,

high pressure, and then drying and hardenzmg saicl compressed block.

.4. The process of making artificial stone blocks which consists in applying removable surfaeesto the walls of'a' mold, wetting said surfaces, addingja layer of moistened cement composition, next adding a'thin layer of a dry cement mixture, then adding a guantity of wet cement composition, subecting said mass to high pressure, releasing said pressure, loosening said mass from the bottom of the mold, moistening the upper part of said cement composition, again applying high pressure to said mass of cement releasing said pressure, removing the finished block from the mold, drying said block, moistening said block, and allowing Saidbloek to harden.

upper part of said cement composition,

again subjecting the mass to a pressure o'f about 250 kilograms per square centimeter, releasing said pressure, removing the finished block fromthe mold, drying said block, moistening said block, and allowing said block to harden.

' In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLEM JACOBUS nu BAP. Witnesses:

J. G. BAILEY,

I. L'Hnnsoon RIX. 

